Method and machine for the producing of tightly-coiled paper



July 17,1928.

F. SCHADE ma'raon AND ucmua FOB was PRODUCING 0F 'rmu'r Filed Feb. 9, 1927 2 Sheets-Sheet 1 BY 001mm PAPER July 17, 1928; I 1,677,599

F. SCHADE METHOD AND MACHINE FOR THE PRODUC ING OF TIGHTLY COILBD PAPER Filed Feb.9, 1927 2 Sheets-Sheet 2 k Patented July 17,1928.

UNITED STATES FREDERIK SCHADE, OF COPENHAGEN; DENMARK. I

7 METHOD AND MACHINE FOR THE PRODUCI G OF'TIGHTLY COILED PAPER.

Application filed February 9, 1927, Serial No. 166389;; and in Denmark February 9, 1926.

Hitherto it has notal wa'ys been possible to obtain a tight coiling-up ofwebs of paper if these consist of fragile paper, or of paper of unequal thickness along its two'edges, or which, order to reduce to a minimum the widthof the paper coil, consist of a;plurality oflayers of foldedf paper orffor example, coils of'paper withone or a'.plurality of linings. Coils of such paperfhave hitherto been made in the form of loose coils, i. e. having the single convolutions or wlndlngs loosely contacting w1th each other. c; According tothe methodlconstitutin'g the object of the present invention a tight coiling-up can 'beperfornied of'the saidpaper web. The method consists in tightening the windings from inside. and not, as isus'ual, from outside, there being at the same time exerted an axial pressure on the end sur-- faces of the coil of paper under formation.

This pressure is exerted by means of plates,

discs, rods or the like disposed at right angles togthe axisof the coil. }The tightening-up of the single'windingso'f the coil is thenperformed by means '-of the friction produced betweenftheiedges of the; single the coil, Thesaid members area'dapted to he slid along the, rotating shaft carrying the paper coil and the slidingmovement may be performed, for example, by means of; a

frame provided with movable'endpieces'en gaging said members which are provided at both ends of the coils. It will sufliceif one of said members is movable inthe axial di- The invention is illustrated inthe drawingwhere y l Y Fig. 1 shows in top view. apart of the machine, up

Figa 2 is a section through awe-b of ap g the outer portions of which have been fol and which has subsequently been 1 cut through along its central line, I f I a,

Fig.f3"shows atop view of a. device with a shaft serving for coiling-up a paper Web, Fig. 4' is a side view'of said device, and

Fig."5 is a" section, on a larger scale,

through a shaft to which one end of a paper web has beensecu're'd, 1,.

@On the drawingl indicates a paper c'oil consisting of a. web of paper having two "folds or plies2j and 3 (Fig.2). The coil is located on a'fshatt tadapted to be rotated by means ofa pulley 5 and carrying another pulley '6 which through a belt" 7 .rota'tesa pulley 8. The pulley 8 is secured to a shaft 9'which through a coupling device-is connected to a'shaft'll suitably journalled and carrying two discs12 slidable in an axial direction and having holes into which rods 13 may be passed; An intermediate disc 14 is providedon shaft 11 between the two discs12. f Y If the coil 1 consists of double-folded paper as; shown in Fig. 2there will, when the [conditions are suitably adjusted, be wound on shaftfll two adjacentwebs of paper, as a rule one .on either sideof the intermediate disc 14, a knife, not shown on the drawing, being located infront of the latter for cutting through the wide, doublefolded web of paper running off fromv the coil.-

The two discs 12 may be provided with relatively wide hubs 15 adapted to slide along the shaft lland to be secured in any desired position on the latter, for "example, by vmeans of screws 16 or thelike.

Theft'wo discs 12 and the intermediate disc 14 are provided with holes registering 'with eachQoth'er and through said holes (three inf-each disc) there may fas mentioned above, be passed. rods 13 which fit snugly in, the holes so that the discs may be readily movediin both directions.

The freei'en'd of the paper Web of the coil 1 folded; I 'Duringthe operation ofithe machine the paper web: is wound up from coil 1 into two coils on shaft llor on the rods 13. If the 'f otation of shafts 4; and 11 is properlyfad' usted the paperweh will be wound relative- 100 is secured to the shaft 11 as shownin'Fig. 5. 1 Shaft 11 has an axially disposed groove, 17 into which there may bedriven a wedge 18 "around which the" paper strip has been coupling member 21 slidable along the ends of said shafts 11 and 20. Adjacent-the bearings 10 there is provided a rod 22 parallel to the axis of said bcarings and around which a frame 23 comprising two members may be swung up or down- (see Fig. 1). ,Each member 23 carries on its under surface afork' 24. adapted to engage discs centrally located on the outer surfacesof the-two discs 1-2. The members'23 will, consequently, rest on shaft lland the forks 24: will prevent the discs 12 from rotating due to the discs25 having an oblong shape as shown.

Threaded rods 26, 27 on eitherside of'shaft 11 pass through threaded holes in said members 23, which rods are interconnected" by means ofa chain 28 or the like. The rod 27 is further provided with a hahdwheel 29. On the hand wheel beingrotated the members 23 and thereby the discs 12 will be moved towards each other. i

' On the shaft 20 being rotated, shaft 11 in the bearings 10 will thereby be rotated. The said shaft 11 carries the loosely wound coil of paper. 7 f f The hubs 15 and the discs 12 are, as mentioned above, secured 'inposition by means ofthe forks 24:, whilst shaft 11, to which. the ends of the two webs of paper are secured, is rotating and produces the tightening of the coils from inside. TVhen hand Wheel 29 is rotated both screw-rods 26 27 are rotated simultaneously bymeans of chain 28 so that their threads, operating in the threaded. holes of the discs 12, move the latter axially on the shaft 11.

The movement of the discs 12 towards disc 14-. cause a pressure against, the sides of the two coils wound on the shaft 11, which pressure may be regulated according to the degree of axial movement of the discs 12; The latter being held against rotation by the forks 24 engagingthe hubs 25, as de scribed above, and the shaft ll' being rotated, the inner end. of the web forming thecenter of the roll and secured to said shaft moves with the latter while the remaining convo-.

lutions of the web forming the outer portion of the roll are prevented from moving at the speed of the shaft. The tightening of the winding of the coil thus takes place from the inside during the formation of thefroll and is due to the frictional resistance produced between the stationary'discs 12 andthe end surfaces of the slower rotating coils of Due to the axial pressure of the discs latter will therefore wind the web of paper tightly upon itself from theinside.

When the finished coils are to be removed, the members 23 together with the corresponding discs 12 are detached. When the wedge 18 is subsequently removed from-shaft 11 the latter can be readily pulled out" of the coil.

The rods 13 must be removed-from the discs 12 before the tightening operation is initiated. i

, It is not imperative to move shaft 11 into i the bearings 10 for the performing ofthe tightening operation which latter can very well be performed bymeans of thezmachine shown in Fig. 1'. In this case, however, the l speed of the machine must be adjustablejso as to become suitably slow during the ,tightening operation. chine of the kind shown'in' Fig. 1 and aplurality of the kind shown Fig. 3 will there} fore prove more economical." V

The plate 14 located on shaft 11 between th'etwo'discs 12, prevents the adjacent'end surfaces of 1 thetw'o coils on 'shaft'll from sliding'on one another during the rotation of the shaft which would otherwise result'in their tearingv one another. 1

Iclaim:

' 1. The method of producing tightlywound A plant comprising one ma rolls of paper, which comprises coiling'one end of the paper, web ona rotating core of fixed diameter to form a compact'central portion and exerting lateral pressure on both edges. of the outerl'convolutions of the web to retard the rotation of the outer convolutions until the pull exerted by the compact central portion of the web is sufficient to overcomesaidlateral pressure.

2.In a machine for producing tightly wound rolls of paper, a rotatable shaft on whic h theweb of paper is coiled, laterally arranged pressure members adapted to engage both edges of the roll on said shaft, means to axially move one of said members relatively to the roll, and means to lock the axially movable member against rotation] 1 3. In a machine for producing tightly wound rolls of paperpa rotatable shaft on which the web of paper is coiled, disc's slid-i. ably mounted'on the shaftat opposite ends of the roll, means for moving the d'isos axial 1y oftheshaft into and out of engagement with the roll on the shaft, and means to lock the discs against rotation.

. 4; In a machine for producing [the wound rolls of paper, a rotatable. shaft on which the web of paper is coiled, discsslidably mounted on'the shaft at opposite'ends of the'roll, laterally movablemembersj for locking the discs against rotatiomandmeans for simultaneously "movingfsaid members 1 axlally of the shaft to impart axial movement to the discs. v I l r 5. In a machine for producing tightly wound rolls of paper, a rotatable shaft on which the web of paper is coiled, pressure discs slidably mounted on the shaft at opposite ends of the roll, pivoted frame members engaging the discs and adapted to lock the latter against rotation, and means for simultaneously moving the frame members in opposite directions axially of the shaft to impart axial movement to the discs.

6. In a machine for producing ti 'htly Wound rolls of paper, a rotatable shaft on which the Web of paper is coiled, pressure discs slidably mounted on the shaft at opposite ends of the roll, a frame having side bars pivotally mounted parallel to the discs,

forks on said side bars for locking the discs I against rotation, transverse rotary adjusting rods in threaded connection with said side bars, and means for operatively connectlng the rods together for slmultaneously FREDERIK SCHADE. 

